U.S. social advertising revenue is expected to grow from $4.7 billion in 2012 to $11 billion in 2017, growing about 18.6% per year, according to a new forecast from BIA/Kelsey released today.

The firm predicts that locally targeted social ad revenue will grow 26.4% annually from $1.1 billion in 2012 to $3.6 billion in 2017, driven by improved ease of onboarding, local targeting and campaign management for both brands and SMBs.